Encountering an issue while attempting to include a feature group on my map:
TypeError: Cannot read property '_layerAdd' of undefined
The section of code causing the error:
<l-map
id="mapid"
:zoom="zoom"
:center="center"
/>
var map = document.getElementById("mapid").__vue__;
var drawnItems = new L.FeatureGroup();
map.addLayer(drawnItems);
Utilizing:
leaflet 1.5.1,
leaflet-draw 1.0.4,
vue 2.6.10,
vue2-leaflet 2.2.1
The function addLayer is not included in the public API for the l-map component. Even if it were, the 'layer' parameter passed to addLayer should be the Vue2Leaflet wrapper component, not the actual Leaflet layer.
To understand this better, take a look at the code in LFeatureGroup.vue:
Take note of the following line:
this.parentContainer.addLayer(this);
In this context, this points to an instance of the Vue component l-feature-group, while the true Leaflet FeatureGroup can be found in the this.mapObject property.
I recommend using the l-feature-group component instead. For example:
<l-map
id="mapid"
:zoom="zoom"
:center="center"
>
<l-feature-group>
<!-- relevant children -->
</l-feature-group>
</l-map>
A useful example can be found in the documentation:
I also advise against using
document.getElementById("mapid").__vue__ref and $refs.
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